University of Oulu

Kähäri, H, Ramachandran, P, Juuti, J, and Jantunen, H. Room‐temperature‐densified Li2MoO4 ceramic patch antenna and the effect of humidity. Int J Appl Ceram Technol. 2017; 14: 50– 55. doi:10.1111/ijac.12615.

Room‐temperature‐densified Li₂MoO₄ ceramic patch antenna and the effect of humidity

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Author: Kähäri, Hanna1; Ramachandran, Prasadh1; Juuti, Jari1;
Organizations: 1Microelectronics Research Unit, University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Persistent link: http://urn.fi/urn:nbn:fi-fe2019052116293
Language: English
Published: John Wiley & Sons, 2017
Publish Date: 2019-05-21
Description:

Abstract

A patch antenna was realized utilizing a Li₂MoO₄ disk fabricated by a room‐temperature densification method, where the densification takes place during pressing. Therefore, the size of the ceramic can easily be managed by controlling the mold dimensions, making this method advantageous for patch antenna design. The antenna showed reasonably good performance. A relative humidity of 80% lowered the resonant frequency and reduced the efficiency of the antenna. Use of a conformal coating reduced the changes and speeded up their reversibility. The results show that the room‐temperature densified Li₂MoO₄ ceramics are feasible for use under high humidity with a silicone coating.

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Series: International journal of applied ceramic technology
ISSN: 1546-542X
ISSN-E: 1744-7402
ISSN-L: 1546-542X
Volume: 14
Issue: 1
Pages: 50 - 55
DOI: 10.1111/ijac.12615
OADOI: https://oadoi.org/10.1111/ijac.12615
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Subjects:
Funding: The work leading to these results has received funding from the European Research Council (ERC) under ERC grant agreement no. 291132 and ERC-PoC grant no. 640887. H. K. gratefully acknowledges the financial support from the Finnish Foundation for Technology Promotion, KAUTE Foundation, Ulla Tuominen Foundation, Tauno Tönning Foundation, and the Foundation for Women in Academic Research. J. J. acknowledges the funding by the Academy of Finland (Project number 267573).
EU Grant Number: (291132) ULTIMATE CERAMICS - Printed Electroceramics with Ultimate Compositions
(640887) LTCeramics - Low Temperature Ceramics Applications
Academy of Finland Grant Number: 267573
Detailed Information: 267573 (Academy of Finland Funding decision)
Copyright information: © 2016 The American Ceramic Society. This is the peer reviewed version of the following article: Kähäri, H, Ramachandran, P, Juuti, J, and Jantunen, H. Room‐temperature‐densified Li2MoO4 ceramic patch antenna and the effect of humidity. Int J Appl Ceram Technol. 2017; 14: 50– 55. doi:10.1111/ijac.12615., which has been published in final form at https://doi.org/10.1111/ijac.12615. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.